/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.    
 */

using Velocity4Net.Ctx;
using System;
namespace Velocity4Net.Runtime.Parse.AST
{

    /**
     * Handles floating point numbers.  The value will be either a Double
     * or a BigDecimal.
     *
     * @author <a href="mailto:wglass@forio.com">Will Glass-Husain</a>
     * @since 1.5
     */
    public class ASTFloatingPointLiteral : SimpleNode
    {

        // This may be of type Double or BigDecimal
        private decimal? value = null;

        /**
         * @param id
         */
        public ASTFloatingPointLiteral(int id)
            : base(id)
        {
        }

        /**
         * @param p
         * @param id
         */
        public ASTFloatingPointLiteral(Parser p, int id)
            : base(p, id)
        {
        }


        /**
         * @see org.apache.velocity.runtime.parser.node.SimpleNode#jjtAccept(org.apache.velocity.runtime.parser.node.ParserVisitor, java.lang.Object)
         */
        public Object jjtAccept(ParserVisitor visitor, Object data)
        {
            return visitor.visit(this, data);
        }

        /**
         *  Initialization method - doesn't do much but do the object
         *  creation.  We only need to do it once.
         * @param context
         * @param data
         * @return The data object.
         * @throws TemplateInitException
         */
        public Object init(InternalContextAdapter context, Object data)
        {
            base.Init(context, data);
            /**
             * Determine the size of the item and make it a Double or BigDecimal as appropriate.
             */
            String str = FirstToken.image;
            try
            {
                value = decimal.Parse(str);

            }
            catch (FormatException E1)
            {

                // if there's still an Exception it will propogate out
                //value = decimal.Parse(str);

            }

            return data;
        }

        /**
         * @see org.apache.velocity.runtime.parser.node.SimpleNode#value(org.apache.velocity.context.InternalContextAdapter)
         */
        public Object Value(InternalContextAdapter context)
        {
            return value;
        }
    }
}